# \#mdrun-optimization

**URL:** https://gromacs.bioexcel.eu/tag/mdrun-optimization/31.md

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## [Generating a wrong xx.gro file during Simulation of a Water Box](https://gromacs.bioexcel.eu/t/generating-a-wrong-xx-gro-file-during-simulation-of-a-water-box/7435)

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**Author:** [@shivam2311](https://gromacs.bioexcel.eu/u/shivam2311)\
**Replies:** 0\
**Last updated:** [October 19, 2023, 8:08am UTC](https://gromacs.bioexcel.eu/t/generating-a-wrong-xx-gro-file-during-simulation-of-a-water-box/7435 "2023-10-19T08:08:00Z")

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GROMACS version: GROMACS modification: No Hello everyone, I am a new user of GROMACS who wishes to study specific radial distribution functions (RDF). So I am learning a code from starting and facing a problem during …

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## [1 millisecond Coarse Grained simulation](https://gromacs.bioexcel.eu/t/1-millisecond-coarse-grained-simulation/7240)

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**Author:** [@maialenzaze](https://gromacs.bioexcel.eu/u/maialenzaze)\
**Replies:** 2\
**Last updated:** [September 24, 2023, 2:05pm UTC](https://gromacs.bioexcel.eu/t/1-millisecond-coarse-grained-simulation/7240 "2023-09-24T14:05:06Z")

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GROMACS version: GROMACS/2020.4-intel-2020a GROMACS modification: Yes Hi everyone! I’m attempting to do a millisecond to second range Coarse Grained MD with gromacs. I have both Martini22p and Martini3.0.0 systems of …